ISD2548S

ISD2548S Application Field and Working Principle

ISD2548S is an integrated single chip voice record and playback device. It is mainly used in toys, language-learning systems, intelligent feedback systems, talking greeting cards, and other products. Its application fields are greatly expanding. In addition, it also has strong capabilities for voice message recording, playing, and storage.

Working Principle

ISD2548S is controlled by a serial bus, utilizes a single power supply for powering its operation. It can recognize commands like play, record, stop, erase, fast forward, and other control commands. In addition, it can also function as a power management unit that can store and control information from external modules. When the system is powered-on, the record/playback unit automatically starts up and waits for commands.

When an operator send commands to the system, the record/playback unit can recognize the action need to be performed. ISD2548S contains 64 Kbits high-speed SRAM that used to store data when recording and loading data for playback. It has a powerful electronic memory that supports up to 4 hours of mono recordings and 8 hours of stereo recordings. When recording, it can compress the data and store it on the high-speed flash memory. When playing back, the compressed data is loaded from the flash memory and reconstituted into the original soundfile.

Features

ISD2548S is a very easy-to-use voice record and playback integrated chip. It provides users with many features including:

• High-speed automatic recognition system that allows users to record and playback easily.
• High-fidelity record/playback of up to 4 hours of mono and 8 hours of stereo recordings
• All-in-one design that can store full-length recordings without any extra hardware.
• Supports up to 64 kHz sampling rate and up to 16 bits bit resolution.

Moreover, ISD2548S simplifies the design of the system and allows for a low cost production.

Conclusion

ISD2548S is an integrated single chip voice record and playback device. It is designed for toys, language-learning systems, intelligent feedback systems, talking greeting cards, and other products. It is easy-to-use and provides high-speed automatic recognition system for easy record and playback. With up to 4 hours of mono and 8 hours of stereo recordings, as well as 64 kHz sampling rate and up to 16 bits bit resolution, it is an ideal choice for cost-effective voice record and playback applications.